Healy - Konsberg Multibeam Sounder
EM 122 performance data
Operating frequency- 12 kHz
Depth range- 20-11000 m
Swath width- 6 x Depth, to approx 30 km
Pulse forms- CW and FM chirp
Swath profiles per ping- 1 or 2
Motion compensation:
- Yaw ± 10 degrees
- Pitch .. ± 10 degrees
- Roll ± 15 degrees
Sounding pattern- Equi-distant on bottom/equiangular
Depth resolution of soundings- 1 cm
High resolution mode- High Density processing
Sidelobe suppression - 25 dB
Suppression of sounding artefacts- 9 frequency coded transmit sectors
Beam focusing- On transmit (per sector) and on reception (dynamic)
Beamforming method- Time delay
Gain control- Automatic
Swath width control- Manual or automatic (all soundings intact even with reduced swath width)
Seabed imagery/sidescan sonar image- Standard
Water column display- Standard
Mammal protection- Standard
Multi frequency operation- Yes (by integration with EM 3002, EM 710 and/or EM 302)
Sub bottom profiling- Yes, by integration with SBP 120
Multibeam historic information.
Seabeam Installation Photos During Dry Dock 2003 Guidelines for multibeam sensor survey